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EP1254676B1 - Dispositif de commutation de débit de type à plusieurs voies - Google Patents

Dispositif de commutation de débit de type à plusieurs voies Download PDF

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Publication number
EP1254676B1
EP1254676B1 EP02017637A EP02017637A EP1254676B1 EP 1254676 B1 EP1254676 B1 EP 1254676B1 EP 02017637 A EP02017637 A EP 02017637A EP 02017637 A EP02017637 A EP 02017637A EP 1254676 B1 EP1254676 B1 EP 1254676B1
Authority
EP
European Patent Office
Prior art keywords
flow rate
paths
housing
constant flow
liquid medicine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02017637A
Other languages
German (de)
English (en)
Other versions
EP1254676A1 (fr
Inventor
Katsuhiro Hiejima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nipro Corp
Original Assignee
Nipro Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nipro Corp filed Critical Nipro Corp
Publication of EP1254676A1 publication Critical patent/EP1254676A1/fr
Application granted granted Critical
Publication of EP1254676B1 publication Critical patent/EP1254676B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/141—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor with capillaries for restricting fluid flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
    • A61M39/286—Wedge clamps, e.g. roller clamps with inclined guides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86558—Plural noncommunicating flow paths

Definitions

  • the present invention relates to a multi stage type flow rate switching device. More particularly, the present invention relates to a multi stage type flow rate switching device suitable for controlling variably a small flow rate by being connected to a ballooned liquid medicine continuous injector (an injector where liquid medicine is filled in a balloon made of an elastic rubber material and liquid medicine is continuously injected over a period of many hours into a human body by utilizing the force produced by contraction of the balloon) that is used as a means for continuously administering a liquid analgetic, anesthetic, antibiotic, or carcinostatic agent into blood vessels, hypodermic portions, epidural portions or the like in a small amount.
  • a ballooned liquid medicine continuous injector an injector where liquid medicine is filled in a balloon made of an elastic rubber material and liquid medicine is continuously injected over a period of many hours into a human body by utilizing the force produced by contraction of the balloon
  • a liquid analgetic, anesthetic, antibiotic, or carcinostatic agent into blood vessels, hypodermic portions, epid
  • a multi stage type flow switching device as described in the preamble of claim 1, is disclosed in US-A-5 318 515.
  • a device comprising flow rate control tubes connected to a multi-way stopcock has already been proposed (Japanese Unexamined Patent Publication No. JP-A-5-84310).
  • the device is constituted by a main body having a cylindrical valve chamber where one flow inlet port and at least three flow outlet ports are formed.
  • a plug having a cylindrical valve portion is rotatably inserted into the valve chamber of the main body.
  • the present invention has been achieved as a result of an intensive study in view of the above-described situation and it is an object of the present invention to provide a multi stage type flow rate switching device which simplifies production steps, which can be fabricated at a low cost and which simplifies switching of flow path and rarely causes erroneous operation.
  • a multi stage type flow rate switching device including a liquid medicine flow inlet port having plural of branch paths on a downstream side, a liquid medicine flow outlet port having plural branch paths on an upstream side, constant flow rate paths for connecting the plural branch paths of the liquid medicine flow inlet port and the plural branch paths of the liquid medicine flow outlet port, and a housing comprising a lid and a main body and capable of accommodating and arranging the plural constant flow rate paths.
  • clamping means which is capable of selectively blocking the plural constant flow rate paths.
  • the clamping means of the present invention is constituted by plural plate-like members having engaging means for engaging with the housing and insertable from a slit provided at the lid of the housing.
  • the plate-like members are stepwisely provided constant flow rate path blocking portions and constant flow rate path nonblocking portions, the constant flow rate path blocking portions being thicker than the constant flow rate path nonblocking portions.
  • a desired flow rate can be selected by utilizing several kinds of the plate-like members each having a different stepped shape.
  • Fig. 1 is an explanatory view showing the multi stage type flow rate switching device of the present invention (showing a state where a lid of a housing is closed)
  • Fig. 2 is a plane view showing essential portions of the multi stage type flow rate switching device shown by Fig. 1 (showing a state where the lid of the housing is opened)
  • Fig. 3 is a sectional view taken from a line VIII-VIII of the multi stage type flow rate switching device shown by Fig. 1
  • Fig. 4 is a sectional view taken from a line IX-IX of the multi stage type flow rate switching device shown by Fig. 1.
  • a multi stage type flow rate switching device of the present invention includes a liquid medicine flow inlet port 1 having three branch paths 11, 12 and 13 on a downstream side, a liquid medicine flow outlet port 2 having three branch paths 21, 22 and 23 on an upstream side, and a flow rate control unit where constant flow rate paths 31, 32 and 33 for connecting respectively of the branch paths 11, 12 and 13 and the branch paths 21, 22 and 23, and they are accommodated and arranged in a housing 4 having an openable and closable lid 41.
  • tubes 81 and 82 are respectively attached to the liquid medicine flow inlet port 1 and the liquid medicine flow outlet port 2, and connectors 91 and 92 are respectively provided at another ends of the tubes 81 and 82.
  • the constant flow rate paths 31, 32 and 33 may be connected to the branch paths 11, 12 and 13 or the branch paths 21, 22 and 23 respectively through connection tubes 61, 62 and 63 which can be pressed and blocked by being pressed by a clamping means 5.
  • the constant flow rate paths 31, 32 and 33 are connected to the branch paths 21, 22 and 23 of the liquid medicine flow outlet port 2 through the connection tubes 61, 62 and 63
  • the connection tubes 61, 62 and 63 may integrally be formed with the branch paths 11, 12 and 13 of the liquid medicine flow inlet port 1 or the branch paths 21, 22 and 23 of the liquid medicine flow outlet port 2.
  • constant flow rate paths 31, 32 and 33 may be set to the same flow rate, it is preferable to set them to the different flow rates if combinations of switchings of flow rates are intended to increase in number. According to the embodiment, the flow rates are made to differ from each other by changing lengths of the constant flow rate paths 31, 32 and 33.
  • a number of the constant flow rate paths in the present invention is not limited to three but the number may be increased or decreased as necessary.
  • the housing 4 comprises the lid 41 and a housing main body 42, and the lid 41 and the housing main body 42 are openable and closable by mutual engaging means.
  • a locking means may be provided to the housing 4 so that a patient cannot open or close it easily.
  • grooves 431 and 432 or the like are provided to the housing 4 so that the liquid medicine flow inlet port 1, the liquid medicine flow outlet port 2 and the constant flow rate paths 31, 32 and 33 are fixed in the housing 4.
  • a plate-like member inserting portion 412 capable of inserting the plate-like members 7 is provided at the lid 41 of the housing 4.
  • the position of the plate-like member inserting portion 412 is not particularly limited so far as it is a position where the plate-like members 7 can block the constant flow rate paths 31, 32 and 33 (or the connection tubes 61, 62 and 63), when the liquid medicine flow inlet port 1 and the liquid medicine flow outlet port 2 are fixed to the housing 4 as in the embodiment, the plate-like member inserting portion 412 is preferably provided in a proximity of the liquid medicine flow inlet port 1 or the liquid medicine flow outlet port 2.
  • the constant flow rate paths 31, 32 and 33 are connected to the liquid medicine flow inlet port 1 or the liquid medicine flow outlet port 2 through the connection tubes 61, 62 and 63, where the plate-like members 7 block the connection tubes 61, 62 and 63.
  • a single or plural of constant flow rate path blocking portions each having a relatively thick wall and a single or plural constant flow rate path nonblocking portions each having a relatively thin wall are stepwisely formed at each of the plate-like.members 7.
  • the flow rate is determined by selecting one of the plate-like members 7 in compliance with a desired flow rate from several kinds of the plate-like members 7 each having a different stepped shape.
  • the plate-like member 7 is provided with a pair of engaging arms 71 and hooks 711 respectively formed at external sides of the side walls at front end portions of engaging arms 71.
  • Engaging holes 421 for engaging with the engaging arms 71 of the plate-like member 7 are formed at the housing main body 42 whereby the engaging hole 421 are engaged with the hooks 711 of the engaging arms 71 when the plate-like member 7 is inserted.
  • the engaging arm 71 can easily be bent toward the inner side because of the flexibility of the material forming the engaging arm 71.
  • the engaging state can be released by bending the engaging arm 71 toward the inner side.
  • the vicinity of the engaging holes 421 of the housing main body 42 is formed in a shape recessed inwardly toward the housing 4 where fingers may be put therein.
  • the plate-like member 7 is preferably provided with a thickness whereby the plate-like member 7 is inserted into the plate-like member inserting portion 412 to a degree whereby the plate-like member 7 is not projected from the plate-like member inserting portion 412.
  • the engaging means is not limited to the shapes of the engaging arm 71 and the engaging hole 421 in this embodiment.
  • the multi stage type flow rate switching device of the invention can switch the flow rate in eight kinds of flow rates since the device has the three constant flow rate paths 31, 32 and 33.
  • the plate-like member 7 can be used by turning leftside rightword. Accordingly, five kinds of plate-like members 7A, 7B, 7C, 7D and 7E may be prepared as shown by Figs. 5(a), 5(b), 5(c), 5(d) and 5(e).
  • Fig. 5(a), 5(b), 5(c), 5(d), 5(e) and 5(f) in compliance with a desired flow rate, and insert the selected plate-like member into the engaging holes 421.
  • Fig. 5(a) shows a state of the constant flow rate paths 31, 32 and 33 before blocking the flow paths.
  • Fig. 5(b) shows a state where all of the constant flow rate paths 31, 32 and 33 are blocked.
  • FIG. 5(c) shows the state where the constant flow rate paths 31 and 32 are blocked.
  • Fig. 5(d) shows the state where the constant flow rate path 31 is blocked.
  • Fig. 5(e) shows a state where the constant flow rate paths 31 and 33 are blocked.
  • Fig. 5(f) shows a state where the constant flow rate path 32 is blocked.
  • the plate-like member 7B turning leftside rightword is inserted in Fig. 5(c).
  • the plate-like member 7C turning leftside rightword is inserted reversely in Fig. 5(d).
  • the pair of engaging arms 71 are bent inwardly, whereby the engagement is released.
  • the housing 4 according to the present invention can be used at any number of times so far as the constant flow rate path blocking mechanism operates normally, that is, the engagement state of the engaging arms and the engaging holes is normal.
  • the multi stage type flow rate switching device of the present invention is provided with a simple structure where the constant flow rate paths are pressed to block by the clamping means. Therefore, the present invention has advantages where the fabrication is facilitated and the device can be fabricated at a low cost. Further, flow path switching operation is simple and accordingly, erroneous operation is rarely caused.

Landscapes

  • Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Fluid Mechanics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Basic Packing Technique (AREA)
  • Multiple-Way Valves (AREA)

Claims (1)

  1. Dispositif de commutation de débit de type à plusieurs voies comprenant :
    un orifice d'admission d'écoulement de médicament liquide (1) présentant plusieurs voies de branchement (11, 12, 13) sur un côté aval ;
    un orifice de refoulement d'écoulement de médicament liquide (2) présentant plusieurs voies de branchement (21, 22, 23) sur un côté amont ;
    des circuits de débit constant (31, 32, 33) destinés à relier les plusieurs voies de branchement (11, 12, 13) de l'orifice d'admission d'écoulement de médicament liquide (1) et les plusieurs voies de branchement (21, 22, 23) de l'orifice de refoulement d'écoulement de médicament liquide (2) ;
    un logement (4) comprenant un couvercle (41) et un corps principal de logement (42), ledit logement (4) étant capable de loger et d'agencer la pluralité de circuits de débit constant (31, 32,33) ; et
    des moyens de serrage situés dans le logement (4), lesdits moyens de serrage étant capables de bloquer sélectivement les plusieurs circuits de débit constant (31, 32, 33) ;
       caractérisé par les moyens de serrage étant constitués d'éléments en forme de plaque (7) présentant des moyens de mise en prise destinés à se mettre en prise avec le logement (4) et étant insérables depuis une fente (412) ménagée dans le couvercle (41) du logement (4), dans lequel lesdits éléments en forme de plaque (7) sont combinées par étapes successives avec des parties de blocage de circuit de débit constant et des parties de non-blocage de circuit de débit constant, les parties de blocage de chemin de débit constant étant plus épaisses que les parties de non-blocage de circuit de débit constant, et dans lequel un débit souhaité peut être sélectionné en utilisant plusieurs sortes desdits éléments en forme de plaque (7), chacun présentant une forme échelonnée différente.
EP02017637A 1996-10-15 1997-10-14 Dispositif de commutation de débit de type à plusieurs voies Expired - Lifetime EP1254676B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP27270296A JP3269073B2 (ja) 1996-10-15 1996-10-15 多段式流量切り替え装置
JP27270296 1996-10-15
EP97117747A EP0836859B1 (fr) 1996-10-15 1997-10-14 Dispositif à plusieurs étages pour sélectionner un débit

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP97117747.2 Division 1997-10-14
EP97117747A Division EP0836859B1 (fr) 1996-10-15 1997-10-14 Dispositif à plusieurs étages pour sélectionner un débit

Publications (2)

Publication Number Publication Date
EP1254676A1 EP1254676A1 (fr) 2002-11-06
EP1254676B1 true EP1254676B1 (fr) 2003-12-17

Family

ID=17517605

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97117747A Expired - Lifetime EP0836859B1 (fr) 1996-10-15 1997-10-14 Dispositif à plusieurs étages pour sélectionner un débit
EP02017637A Expired - Lifetime EP1254676B1 (fr) 1996-10-15 1997-10-14 Dispositif de commutation de débit de type à plusieurs voies

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP97117747A Expired - Lifetime EP0836859B1 (fr) 1996-10-15 1997-10-14 Dispositif à plusieurs étages pour sélectionner un débit

Country Status (4)

Country Link
US (1) US5925023A (fr)
EP (2) EP0836859B1 (fr)
JP (1) JP3269073B2 (fr)
DE (2) DE69726897T2 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6786888B1 (en) 1996-05-20 2004-09-07 Medtronic Ave, Inc. Low profile catheter for emboli protection
US6050972A (en) 1996-05-20 2000-04-18 Percusurge, Inc. Guidewire inflation system
AU3132097A (en) * 1996-05-20 1997-12-09 Percusurge, Inc. Low profile catheter valve
CA2336645C (fr) * 1998-08-18 2008-08-05 Baxter International Inc. Pointe pour applicateur de scellant et procede d'application
JP4010005B2 (ja) 2000-02-29 2007-11-21 ニプロ株式会社 薬液注入器の注入速度調整装置
DE60322512D1 (de) 2002-02-18 2008-09-11 Danfoss As Vorrichtung zur verabreichung eines medikaments in flüssiger form
US7455072B2 (en) * 2002-09-19 2008-11-25 I-Flow Corporation Device for selectively regulating the flow rate of a fluid
US6770057B2 (en) * 2002-10-31 2004-08-03 Hewlett-Packard Development Company, L.P. Quick flow control for flexible tubing
EP1594562B1 (fr) 2003-01-28 2017-09-13 CeQur SA Support pour capillaire avec systeme de surveillance de fuite
US8118061B2 (en) 2008-06-19 2012-02-21 Acacia, Inc. Variable flow rate controller
CN101428161B (zh) * 2008-10-31 2011-08-17 珠海福尼亚医疗设备有限公司 一种输注用流速调控器
FR2939346B1 (fr) * 2008-12-10 2014-09-12 Sartorius Stedim Biotech Sa Pincement de fermeture d'un tube souple destine a des applications biopharmaceutiques
US8230744B2 (en) 2009-05-06 2012-07-31 Cequr Sa Low-dead volume microfluidic circuit and methods
US9211378B2 (en) 2010-10-22 2015-12-15 Cequr Sa Methods and systems for dosing a medicament
KR102472316B1 (ko) * 2019-11-01 2022-12-01 김용현 약액 유량 조절 장치

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375813A (en) * 1981-02-10 1983-03-08 Delmed, Inc. Medical fluid flow rate controlling device
US4688753A (en) * 1984-12-06 1987-08-25 Baxter Travenol Laboratories, Inc. Tubing occluder
US4892524A (en) * 1987-10-30 1990-01-09 Gordon Smith Intravenous administration system
US4950255A (en) * 1988-04-07 1990-08-21 I-Flow Corporation Catheter connector and clamp
US5009251A (en) * 1988-11-15 1991-04-23 Baxter International, Inc. Fluid flow control
US5078699A (en) * 1989-09-22 1992-01-07 Habley Medical Technology Corporation Compact, easy to assemble, safety IV system
IT9019187A1 (it) * 1990-01-30 1991-07-31 Dideco Spa Deviatore di flusso di liquido in un circuito
JPH0584310A (ja) 1991-09-26 1993-04-06 Nissho Corp 多方活栓およびそれを用いた流量制御装置
US5318515A (en) * 1992-08-17 1994-06-07 Wilk Peter J Intravenous flow regulator device and associated method

Also Published As

Publication number Publication date
EP1254676A1 (fr) 2002-11-06
DE69718872T2 (de) 2003-06-18
JPH10113386A (ja) 1998-05-06
DE69726897T2 (de) 2004-06-03
EP0836859A2 (fr) 1998-04-22
DE69718872D1 (de) 2003-03-13
JP3269073B2 (ja) 2002-03-25
EP0836859A3 (fr) 1998-10-07
US5925023A (en) 1999-07-20
EP0836859B1 (fr) 2003-02-05
DE69726897D1 (de) 2004-01-29

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